Machine for preparing cores for reuse in manufacturing pneumatic-tire shoes.



F. L. KILLIAN.

MACHINE FORPREPAHING COR-ES FOR REUSE IN MANUFACTURING PNEUMATIC TIRE SHOES.

APPLICATION FILED AUG. 21, 1911. RENEWED APR.15, 1912.

1,053,404, Patented Feb. 18, 1913.

3SHEETS-SHEET 1.

F. L. KILLIAN.

MACHINE FOR PREPARING CORES FOR REUSE IN MANUFACTURING PNEUMATIC TIRE SHOES.

APPLICATION FILED AUG. 21, 1911. RENEWED APR. 15, 1912. 1,053,404.

Patented Feb. 18, 1913.

F. L. KILLIAN. MACHINE FOR PREPARING corms FOR REUSE 1N MANUFACTURING PNEUMATIC TIRE SHOES.

APPLICATION FILED AUG. 21, 1911. RENEWED APRQlfi, 1912. 1,053,404.

Patented Feb. 18, 1913.

3 SHEETS-SHEET 3.

v m gm}; Zau/ M To all with n, it may concern:

Be it known that,I, Fnnoniiicic Leo Kitmm, a citizen'of theUnited'States, residin at Akron, :in the county of Summit ant State of Ohio, have invented new and useful Improvements in Machines for Preparing Cores for Reuse in 'Manufacturing Pneumatic-Tire Shoes, of which the following is a s iecification.

'ihis invention relates to machines for preparing cores for reuse in manufacturing pneumatic tire-shoes.

Cores for the manufacture of tire-shoes are aniiularly-forined and are either .made integral or are formed of a plurality of segment-shaped members adapted to be assembled together with their ends abutting to form the core. The present practieein the use of cores is to coat portions of the faces of the core with a siccative solution of rubber cement which is allowed to dry before the tire-shoe is built up and after vulcaniza-v tion the tire-shoes are stripped from the core and the core would then seem to be ready for reuse, but experience shows that so much;

of the rubber cement, used to increase the adhesion of the fabric of the tire-shoe to the core during the building of the shoe, hardens.

or dries and remains on the core that it must be scraped from the core and a new layer of a siccative solution of rubber cement applied to the core before it is rcady'forreuse in the building of a tire-slioe. It'has been customary to scrape this'hardened and dry cement from the core and then apply the new layer of rubber cement by hand. vIn large factories where thousands of'cores are daily usedrepeatedly, the scraping ,of the hardened and dry cement from the cores reuires the services of a large corps of men and the applying of the rubber cement is usually done y the tire-building workmen previous to the building up of the next tire, and where the number of tire-building workmen in the factory runs into hundreds, and each sup lied with a cement receptacle for coating-t ie cores to be usedthere is a vastamount of waste of the rubber cement which is a comparatively expensive article, and rapidly. driesfdue to the vehicle employed which is usuallybisulfid'of'carbon or benzin, it being apparent that as the number of receptacles containing the rubber cemeiit'is increased by furnishing one to each builder,

fl peolflcetton'ot {letters Patent. Application filed August 21, gi'si i, ar a te UNIZEEDSTATESPATENT OFFICE.

Patented Feb. 18, 1913. massed April 15. 1912. v Serial No. 691,072.

"aifti'riiuat of evaporation and waste of the rubber-cement materially, increases. The

cores are exceedingly clumsy and very heavy,

running in most cases from one hundred fifty to four hundred pounds each and their handling requires the services of a number of men, who, after cleaning, place them in a rack, to economize space, and from which they must be moved to the places where they are to be recoated and employed.

Numerous other objections exist to the present method of preparing the cores for reusein manufacturing pneumatic tire-shoes,

and hence, the object this invention is to provide a machine which will not only remove the hardened and dry cement from the cores but will recoat them with a siecative solution of rubber cement and deliver 'them ready for reuse much more rapidly than can be done by a large force of skilled men, the invention contemplating the provision of suitable mechanism for removing the hardened and dry cement from the used cores and recoating the same after the clean- .ing operation, irrespective of whether the icore istprovided with a hub and extension jspokes o r holding the core or not. In reference to this last, it may be stated that, cores for this class of work are usually not provided with a hub and spokes and once, cannot be mounted for cleaning on a revolublc shaftwithout the employment of a tempo- "rary hub and extensible spokes which must be suitably positioned before the core can be handled, all of which requires time and an excessive amount of labor.

- \Vitlitheforegoing and other objects in view, the invention consists in the novel construction, combination and arrangement of arts constituting the invention to be hereinafter specifically described and illustrated in the accompanying drawings which form a part hereof wherein is shown the preferred embodiment of the invention, but. it is to be :understood that changes, variations and modifications can be resorted to winch come o within the scope of the claims hereunto appended.

In the drawin s in which similar reference numerals in icate like parts in the dif- 'ferent figures, Figure 1, is a view in side elevation of-my;improved device; Fig. 2, is a vertical central ongitiidinal sectional view of the same; Fig. 3, is a view in end elevaill) lUI.

t ion lookiiig from the left V Fig;

lowerside armsii, an between thep'aifiof' posts 2 -and'f-3 are upper? side' arms {6; and lower side arms 7.' 3 :j

'lhe'members of'pairs designated by the reference numerals 2 and il 'are preferably united'near the to sbycross arms 8 to holdthemin spaced relationwith-respect-to each other.'.' Extending from 'the upper-faces of the upper pair of side arms 4 to the tops of the posts 2 are parallel inclined arms 9and from the upper faces of the'upper side-arms G to the upper ends of'the post s 3- are;in -j clined arms10; These arms =9 and: 10 are provided-with longitudinal groovesor slots 11 andpGl, respectively, constituting ways for apurpose 'to be later' described. ,Connected withth'e left end 'offthe-'frame, in F ig. 1, is a feed-chute 12 above whichfare a" PM!" of spaced, guidin rails13; and' extend j mg from the right ent of thef frame","-in- Fig; I, is a centrally arranged discharge-elude; pa r;of 'spac'ed guiding 14, above which are a railstlfi i v Mounted in oppositely disp'bsed-i'slots 16, in the lower side arms" of the frame,--"are adjustable journal boxes 17 fora-transverse shaft'18. Loosely mounted on the shaft 18, andcentrnlly'thereof,l'is a roller havinga concave periphery. At the ends 'of' the roller 10 and fixedly mounted on' the shaft 18 mm pair-ofsprockebwhels 20,-if'At-a point remote from the shaft-F18is' a' second transverse shaft 21 extending'between -the sides of the frame and having'oneend thereof ad'ustably mounted ina'box 22, see Fig.-

(l. T isjshaft has a reduced-median portion on' which fixedly mounted is a roller 23 havinga periphery similar to the roller 19. ".L'oosely mounted at one end of the roller 23 is'a' sprocket-wheel 24 and at the opposite end -a sprocket-wheel 25-similarly mounted. The hub of the sprocket-wheel" 25 is provided'with a laterally-extending sleeve 26 adapted to be mounted in an-at justable box 27 arranged to be shiftedin unison with f the. box-.- 22 when desireda -Sccu red on the of the "s leeve;26, 'orf formed integrally {therewithais a pulley-r128l ad apted to revolve-in 'unison with the: sprocket'whcel' 25. Fast'encd' by a key orotherwise on theshaft 21 is a pulley 30. Secured to each 1. an .3,";the'-mernbers"of; achl-pairi b'eing in transverse; alinemnt and {spaced ti laterally". from eachfiotherand extending between the 'of the inn er faces of each of the posts 2 is a sprocl etwheel 31, o|i, wh'ich is a. sprocket-- iain ..32," fon each side of the device, and fwliich extends around the sprocket-wheels- 2 ai'id 20, so that they will all revolve in 1iis on. 1 YIounted on the peripheries of the rollers 19 and 23 is a ring core 33 of ordiarytjeonstri iction which is held against latgeral 'movementEby means ofan idler roller =s47=1mingn periphery'similar to the rollers ,IQ-find 23 and with the ends of its shaft 35 {thereofs proiectinglaterally, to slidein the 'jslot's'i ll 'w iich constitute guiding means atherefor, 'lhe core'33 is shifted to the positioniwhichitoecupies in Figs. 1 and 2 by rollingit over the feed-chute 12 during whicht-ime it is guided by the guiding rails 13 until it seats upon the peripheries of the three rollers,-19, 23 and 34 which form a tripodal structure for sustaining the core during the removing of the hard and dried cement from the surfaces thereof.. The core is revolved while thus seated by communicating'motion to the pulley 30, by a belt or otherwise, which revolves the shaft; 21 and roller 23 causing a simultaneous revolution of the core 33. During the revolution of the core the hardened and dried cement adhering to the surface of the'core is removed by mechanism now to be described, and as the imechanism for doing this is similar on o )po site sides of the core the description wi I be Iconfined to one mechanism attention being directed to Figs. 1 and 4. Extending vertically between the lower side arm 5 and the :upper side arm 4 is-a pair ofparallel bars 80 the-inner opposing faces of which are provided I with lon 'tudinal grooves 37 to constitute ways. 'lidably mounted in the ways is a carrier 38 having projecting from .its'outer face a pin 30 adapted to engage in a slot in a shifting-lever 40 one end of which ;is' pivotally fulcrumed on the post 2 and its opposite end adapted to be held in an adjusted position through the medium of a rack 41. Pivotally secured to the lower end pram carrier 38 is a depending arm 42 capable of being swung toward and away from the core between the bars 36.

The mechanism for removing the hardened and dried cement from the surface of the core 33 may consist of various devices, a preferred form of which, however, embodies a bolt-43 adjustably mounted in the lower end of the arm 42 and held in posit-ion by a clamping nut 44. On the inner end of the bolt 42 is a scra ing tool preferably cousisting of a luraiity of flexible strips 45 of material sum as, spring steel, or the like 'mounted ina head 46 on the end of the bolt. These scraping blades 45 will preferably be so shaped 'and'fashioned'that they will engage" only that portion of the surface of the corona which the siccative rubber cement has been applied and it will, of course, he

obvious that if the rubber ic ement is applied to otherportions ofi'thefouter;surface o f the' core jbody; the f-- general formatiofn I of the scraping-bladegwill 'i'be 1; altered accordingly so as; to? reach and engageF all portion's gjonflj vhichl;there*is any; l1ability "-of anyfhar dened land d ried .cement:remaining; on} the core. In order Tto cause the scraping-blades 45 to .1 engage'.;tlie surface iofthecore avith sutlicientgpre'ssure to clean the same I- em' ployjsome means for forcing them I inwardly towardjthej'core,'and for this purpose I show. an arm 47=projecting from-the'outer'. faceof the'arm 42 towhichis "attached a weight 48. sutlicient'togive the required pressure of the blades 45. However, if desired,.'a resilient element such asa spring may be-"employed for this purpose.

After the scraping operation the core 38 is removed from its seat on the rollers 19 and 23 by the following mechanism: Secured to. extending transversely of, and moving with the sprocket-chains 32 is a bar 49. Extending between the posts 2 is a cross-bar so on which is centrally mounted a bridge 51. The bar 49 is adapted to engage the one 33 as the sprocket-chains 32 moveand raise the core from its seat, causing it to roll over the bridge 51 as indicated by a-dotted circle [32 in Fig. 2. During the cleaning operation the s rocket-chains 32 are preferably inoperative and the roller- 23 is revolved through the median of a belt applied to the-pulley 30, but when it is desired to shift .the core, the belt,is shifted so --as. to partially or wholly enga e the pulley which revolves the sproc et-wheel 25 and one sprocket-chain 32, causing a simul taneous revolution of'both sprocket-wheels- 20 and a corresponding movementof the opposite sprocket-chain on theopposite side of the core. As these chains move the crosshar'49, the latter, engages theouter or tread surface of the'corc and raises='it' upwardlyaud forwardly simultaneously-onthe roller- 23 as'a pivot, and shifts or rolls it over the bridge 51. After the core has been removed the belt is shifted ba'ckonto .the pulley. and the tri odal structure consisting of the rollers 10,- 3 and 34 is ready to-receive another core. When the core 83 is raised from its seat on rollers 1t) and :23 the roller 34 rnnningon the upper face ofsaid core will he raised sutliciently to perinit bllG-COIQaiO moveforward, in doing which, the ends of the shaft 35,-of the roller 34 will slide up-- wnrdly in the slots 11.

Extending'between the side arms? and mounted'adjustably therein is a shaft 53- hearing a loosely mounted roller 54 andat the ends. of 'the roller a pair of fixedly g mounted sprocket-wheels 55. This" -roller\ and the sprocket-wheels are'exactlvf similan to the roller 19*. and sprocket-wheels 20. Also extending between the side arms 7 of proper portions of the core. :isrotated when in use by means of a roller ,70- mounted on the shaft of the brush, which frictionally engages a portion of the surface fot the core so that, when the core is rethefframe is a shaft SG'bearing identically 'the same mechanism as .is shown in Fig. 6, embodying a. roller fixedly mounted on the .shiiftand-having:at the ends thereof loose isprocket-wheels, and a tight and loose pulle v," -jthej latterconnected-with one of the sprocket-wheels :but as the structure is the same-asthat described-in the mechanism ,mounted on the shaft 21 a further descrip- *tion is believed to be unnecessary.

Mounted on the inner face of each of the "posts 3 are sprocket-wheels 57 to .receive sprocket-chains 58 whose function is the same'as thefunct-ion of the sprocket-chains 32 and these sprocket-chains are also provided with a cross-bar 59 identical in construction with the cross-bar 49. \Vhen the core 32 has been shifted by means of the cross-bar 49 over the bridge 51 it seats upon the roller 54 and the roller carried by the shaft 56 and is held in position by a roller (30 the ends of the shaft of which are slidably mounted in slots 61 in the inclined arm 10. The construction and operation of this portion of the device is precisely the same as that of the first mechanism described and the core 62 is rotated in precisely the same manner and is removed from its seat on the roller 54 and the roller carried by the shaft 56 into the discharge-chute 14. by means of the transverse bar 59 operated by means of the s rocket-chains 58 and in passing over the crate 14 the core is held in an upright position by means of the guiding rails 15.

The adhesive rubber cement is applied to portions of the surface of the core by the following'mechanism which is similar on both sides of the device, and hence, a description of one is deemed to be sutiieient.

Extending between the lower side arm 7 and the upper side arm 6 area pair of parallel bars 63 spaced from each other and provided with grooves 64 in their inner opposing-'faces to constitute ways to permit the -'.vertical shifting of acarrier 64 mounted therein. This carrier is raised by means of a lever 05 fulcrumed on the post 3 and held in a desired position by seating the loose end thereof in one of the teeth of the rack 06 on the posts 2. Pivotally secured to the carrier. 04 is a tank 67, adapted to contain a liquid rubber cement, the lower end of which is provided with a discharge spout 8 which turns inwardly toward the core. Mounted 1n the oiening in the end of the tank 07 is a revolu le brush 60, which serves to normally close the opening in the spout (l8 and to convey a suital) e quantity of liquid cement therefrom and a )ply it to the he brush (it) volved the brush is also simultaneously revolved to supply the coating of cement. After the content has been applied, which operation usually requires only one complete revolution of the core the belt, which operates the shaft 56, is shifted onto the pulley which is attached to tlie'sprocketwheel on the shaft 56, causing thereby a sinmltaneous movement of the sprocketrhains 58, which carry the bar 59 around into position to engage and shift the core 62 from its seat, and roll it onto the discharge-chute 14.

ixperience has shown that as the scraping-blades 45 and brushes 69 engage, what may be termed tho inner incline lateral faces of the core, it has been found desirable to swing the blades and brushes laterally away from the core, during the removal of the same either from the position which they occupy between the rollers 19 and 23, or between the roller 54 and the roller on the shaft 56. In order to accomplish this the following mechanism is em )loyed: qecurcd to the outer face of each of the posts 1 are the journal bearings 71, in which are mounted longitudinally-extending rotatable shafts 72 the opposite ends of which are suitably mounted. say, for instance, in one of the bars 30. The front ends, that is to say, the left ends in Fi s. land 2, of these shafts are provided wit-ii laterally bent ortions 73 terminating in tappet ends 74 which lie in the path of the cross-bar 49, and are rocked upwardly by it as it moves forward toward the core in unison with the sprocket- (llttillS 32. lhe opposite ends of the shafts T2 are provided with abruptly-bent portions 75 which when the shafts 72 are rotated engage the inner faces of the arms 42 and swing them outwardly, as shown in the portion on the right of l i 4, to thereby permit the ready bodily shif fing of the.core, the operation of swinging these arms 42, simultaneously and laterally, taking )lace immediately before the engagement 0 the transverse bar 49 with the core, so that by the time the latter is shifted by the bar 49, the arms 42 with their accompanyin mechanism will have been swung out of tie way to leave a clear passage for the core. I preferably employ identical mechanism for shifting the tanks 57 laterally, to move the brushes 9 from contact with the core (32 before. it is to be shifted, and this mechanism embodies a journal bearing 76 on the out ward face of each of the posts 2 in which are mounted longitudinal shafts 77, with their right ends having abruptly-bent portions 78 which engage the inner faces of the tanks 67 in the same manner as has been described with reference to the engagement of the ends 75 with the arms 42. The opposite ends of the shafts 77 are bent laterally and extend through slots 79 in the posts .2, to engage the cross-bar 59 on the sprocketchains 58 in a )recisely similar manner as has been described with reference to the function of the cross-bar 49.

From the foregoing description it will be seen that as the cores are removed from the vulcanizing molds, having hardened and caked cement on their lateral faces, they will be fed down the chute 12 into the mechanism just described by which they are cleaned and the hardened and caked rubber cement removed, after which they are shifted over the bridge 51, into the mechanism which places a new coat of rubber cement on the proper places on the surface of the core; and after placement of this layer of cement they are lifted and discharged from the device through the discharge-chute 14 and are then ready for reuse, the whole operation occupying but a very short interval of time and requiring comparatively little or no labor thereby reducing the expense and time required to prepare the cores for reuse.

If different sizes of cores are used in connection with this device, the positions of the scraping-blades 45 and the cement-applying brush (39 may be shifted to proper elevations to perform their functions by means of the levers 40 and 65, respectively.

It may be stated that if it is desired, the sprocket-chains 32 and 38 may be operated simultaneously with the revolution of the rollers which support the cores, so as to eject the latter after making a complete operation. This can be easily done by making the sprocket-wheels at the ends of the rollers rigid with the shafts on which they are mounted or securing the pulleys .28 and 30 together or by running the-belt on both pulleys constantly so that the chains which remove the cores are run during the cleaning and cement-applying operations. Or as described, the cleaning and cement operations may be followed by the movement of the sprocket-chains 32 and 38 to eject the core, as before stated, but as this use of the machine is obvious it further description and illustration thereof is believed to be unnecessary.

I claim:

1. A machine for preparing cores for reuse in manufacturing pneumatic tire-shoes comprising means for revolving a used core, said means embodying three rollers tripodally arranged, means for revolving one of said rollers causing a simultaneous revolution of said core, a sprocket-elmin mounted on each side of. the position occupied by said core, means for moving said sprockeb chains, a member connecting said sprock chains and extending across the space occupied by said core and arranged to shift said core from said tripodal structure, and means for cleaning the surface of said ('ul't during its revolution.

2. A machine for preparing cores for reuse in manufacturing pneumatic tire-shoes comprising means for revolving the used core, said means embodying three rollers 'tripodally arranged, means for. revolving one of said rollers to cause the continuous revolution of said core, cleaning tools engaging the surface of said core for removing the accumulation thereon during its revolution, and mechanism for shifting the position of said core after the.c1eaning operation.

4. A machine for preparing cores for reuse in manufacturing pneumatic tire-shoes comprising a plurality of rotatable rollers suitably positioned to support a core, means for revolving one of said rollers to thereby caus'e the revolution of said core, means for cleaning the used surface of said core during its revolution, feed mechanism for moving said core into position engaged by said rollers, and mechanism for shifting the posit-ion of said-core after the cleaning oper tion.

5. A machinefor preparing cores for reuse in manufacturing pneumatic tire shoes comprising a supporting frame, a plurality of rollers suitably positioned to revolubly supporta used core, means for feeding cores into position to be supported by said rollers, means for revolving said core, and means for cleaning the used surface thereof.

6. A machine for preparing cores for reuse in manufacturing pneumatic tire shoes comprising a supporting frame, a plurality of rollers suitably positioned to revolubly support a used core, means for feeding cores into positionto be supported by-said rollers, means for revolving said core. means for cleaning the used surface of said core, and mechanism for removing the core from ,the rollers after the cleaning operation.

In testimony whereof I have hereunto set niy hand inpresence of two subscribing witnesses.

FREDERICK L. KILLIAX. Witnesses:

C. E. HUMPHREY, A. L. MCCLINTOCK. 

